Gong-striking mechanism.



H. E]. REEVE.

GONG STRIKING MECHANISM:

APPLIOATION FILED JAN.22, 1909.

2 SHEETS-SHEET 1. F lg- 2 l/VVENTUI? Patented June '15, 1909.

"useful Imp my Patent #868,221.

tion the nnrirnn snares r 'rnnr neuron.

T HENRY E. users, or NEW YORK, N. Y.

eons-summits MECHANISM.

citizen of the United States, residing at New York, in the county of Kings and State of New York, have invented certain new-and rovomcnts in Gong-Striking Mechanism, of which the following is a specificatime.

My invention relates articularly to so called electromechanicabells and is an improvement on the structure sct'forth in In this type of hell the hammer is rotated by a spring driven train. Normally the mechanism is held quiescent by a stop device which can be disengaged by the action of an electro-magnet and res armature. To prevent injury and 7 reduce the wear on the parts so that they will last longer and remain in better adjustment I bring the hammer to rest yieldingly and without shock instead of abruptly at the end of; a rotation,

In the present embodiment of the invenmain shaft is formed in two parts which have. relative rotative movement's. One part is driven by the s" ring train and checked by the stop. The other part carries the hammer. The two parts are connected together by e sprin and providedwith sto s for limiting the relative movements of tlie two parts. By this construction the checking of the shaft is made more positive and the hammer is still brought to rest by the spring without injurious shock. I have made this present construction more compact by locating the driving spring underneath the gong top and winding the spring through tliemcdium of a shaft and ratchet intermediate the spring and hammer shafts. in this way the spring may still be wound while the gong top is in place. There are also certain features of improvements which will be ointcd out in the claims. For instance t 1c stop lever also prevents backward movement of the hammer and shall. The cam brings the stop lover back into engagement with the latch almost immediately after the hammer starts to rotate and holds it there until the rotation is completed.

Figure 1 is a front elevation, parts being broken away and others shown dot-ted and showing the mechanism in the normal inactive position. Fig' 2 is a side view'oi' the same. Fig. 3 is an elevation of parts of tho escape-moot mechanism in the position just alter release. Fig. 4 is a longitudinal section Qpeoifioation of Letters Patent. Application filed JanuaryfQB, 19459. Serial No. 473,636.

Patented June 15, 1909.

of the'main shaft. Fig. 5 is a horizontal section taken looking upward in Fig. 1 and showing the main shaft and escapement. Fig. 6 is an elevation of the hammer and escapement, showing the relative 'osition of the parts in dotted lines as the arnmer comes yieldingly'to rest.

The glong top, or hell 1, is of any type and is usue y mounted with its axis-horizontal although the position is unimportant since the mechanism is not do endent upon the action of gravity. The hammer 2 is arranged to strike the outer edge of the gong just before the end of its rotation so that normally when the gong is in place the momentum of practically the full stroke is delivered in a sound producing blow. Thehammer then glances off and passes beneath the edge of the gong whereit is brought to rest as hereinafter described.

The drivin spring 3, its shaft 4 and gear wheel 5 are allmounted beneath the gong top and out of the way. The shaft 6 having the pinion 7 which meshes with the driving wheel 5, is just outside the gong top and adapted to receive a key or handle for winding. The gear 8 on/the winding shalt 6 meshes with pinion 9 omtlie main shaft which is-lormcd in two parts 10 and 11 connected as hereinafter set forth. The part 11 carries the hammer 2 which is thus rotated by the driving spring. In order to permit winding the driving spring without rotating the hammer backward I mount. the gear 8 loose on shaft 6 and provide itwitb a pawl 12 pressed by spring 13 into engagement with ratchet .14 which is fixed on the winding shaft (i.

The stop lover I 5 is pivoted at 16 and has a cam-like shoulder 17 against which the inclined shoulder 18 carried by the shaft 10, presses when the parts are in their normal osition of rest as in Figs. 1, 2, 5 and 6. The liitcli member 19 pivoted at 20, has a book 21 against which the tip 22 of the stop lever normally rests. When the armature 23 carried by the latch member 19 is attracted by the magnet 24, the book 21 releases the tip 22 and the book 25 of the latch member is interposed beneath the shoulder 26 of the stop lever 15, the stop lover being under pressure of the shoulder 18 against inclined shoulder 17. The curved spring 27 secured at one end to the shaft 10 gives an added pressure against the stop lover and gives greater uniformity of action. When the magnet 24 releases the armature 23, the latch member 19 is returned -to its original position against sto 28 by the strikes the gong as shown in dotted lines in Fig. 5. A notch in the cam permits the hammer to drop back under pressure of the spring 32 as shown in full lines Fig. 5.

At the beginning of the rotation of the main shaft the disk-like cam 33 carried by the shaft part 10 engages-the arm 34 carried by the lever 15 and forces the lever from the position of Fig. 3.ba ck into engagement with the latch 19 as shown in Fig. 6 so that the stop shoulder 17 is inter osed in the path of movement of the shoul er 18. The cam 33 and arm 34 hold the stop lever up in its checking position during a complete rotation p of the hammer even if the magnet 24 should be energized and attract its armature a sec- 0nd time during the cycle of the first stroke. At the end of the stroke the arm 34 drops off the shoulder 35 of the cam and a second stroke may be roduced by again energizing the magnet and disengaging the latch 19 and stop lever 15 as before described. The shoulder 35 prevents the hammer from rebounding and also from being rotated. backward.

The plate or disk 36 carried-by the shaft portion 11 turns loosely on shaft portion 10 and has a notch with shoulders 37 and 38 be-v tween which the pin 39 carried by the cam 33 on shaft portion 10 projects. The spring 40 is coiled around the sleeve of plate 36 and has one end secured at 41 to shaft portion 11 and the other end secured to pin 39. This spring is coiled so as to press the plate 36 in the direction opposite the direction of rotation of the shaft 10 and so that the shoulder 37 resses against in 39. The normal osition 1s shown in ful lines in Fig. 6. en the hammer and shaft are rotated, the shaft portion 10, cam 33 and pin 39-are checked by the shoulder 18 striking shoulder 17 of the stop' lever. The momentum of the hammer is considerable, especially if thegong top has been removedfor any reason, and carries the hammer and its shaft portion 11 and plate 36 to the dotted position in Fig. 6 against the resistance of the spring 41 which is thus coiled tightly. The shoulder 38 serves to limit this relative rotative motion of the two arts of the main shaft. The spring 41 firings the hammer back to the full ine position ofFig. (land the shoulder 37 presses against stop pin 39. This yielding connection between the two parts of the shaft also eliminates all shock of the hammer when the stop lever snaps down onto the hook 25 of the 'anlsm.

latch memberas the magnet is energized at the beginning of the operation of the mech- The details of construction herein illustrated and described constitute only one form ofmy invention and I-wish itdistinctly understood that I do not limit my claim except as set forth, the terms used being intended in broad significance.

What I claim is 1-. An electro-mechanical gong mechanism 1 com rising a rotatable hammer, a shaft, a

iel' ing connection between said shaft and ammer permitting the hammer to have partial rotation after the shaft is brought to rest, 8 means for giving complete rotation to said shaft and hammer, a stop for said shaft and means for retracting said step.

2. An electro-mechanical gong mechanism comprising a gong, ,a hammer, a shaft, a 8 yielding connection between said shaft and ammer allowing a limited relative rotative movement, means for rotating said shaft and hammer, a stationary cam having an inclined surface on which a part of the hammer rests 9 for bringing said hammer into contact with said gongas said hammer rotates and means for stopping the rotation of said shaft.

3. An electro-mechanieal gong mechanism comprising, a shaft, a-shoulder carried there: 9 by, means for rotating said shaft, a-stop for said shoulder, means for retracting said stop,

a hammer carried by said shaf a spring connection between said shaft an hammer, and stops limiting the rotative movement of 'said 1 hammer relative to said shaft.

4. A gong striking mechanism comprising,

a shaft, a stop therefor, means for disengaging said stop, a hammer, a notched plateparried thereby, a pin carried by said shaft and 1 projecting into the notch of said plate, a spring connecting said hammer and said s aft and ressing said plate against said pin at one en of said notch and means for rotating said shaft and hammer.

5. A gong striking mechanism comprising, a shaft, a hammer carried by said shaft and having a limited rotative movement, with relation thereto, a spa ing connecting said shaft and hammer, means for giving complete ro- 1 tation to said shaft and hammer and a stop for checking said shaft.

6. A gong striking mechanism comprising, a two-part shaft, a shoulder carried by one, part, a stop for said shoulder, means fordis- 1 engaging said stop, a hammer carried by the other part of said shaft, a spring surrounding said shaft and having one end secured to each part of said shaft and means for rotating said shaft. 1

7. A gong striking mechanism comprising a gong, a shaft, a hammer, a yielding device interposed between said shaft and hammer permitting a limited relative rotative movement', a movable non-yielding stop normally 1 restraining said shaft, means for holding said step stationary, ing complete rotation to said mer, means for retracting stationary cam having on which a bringing said ammer into contact with said gong as the hammer rotates.

8. A gong striking mechanism com rising a shaft formed in two parts having imited relative rotative movements, a-shoulder and a cam carried by one part of said shaft, means for rotating said part, a stop lever eoaeting with said shoulder and having an arm acted on byl said cam for moving said lever, means for disengaging said step lever, a hammer carried by the other part of said shaft and a yielding connection between the two parts of said shaft for bringing thehammer to rest without shock after rotation.

9. A gong striking mechanism comprising normally means for givsaid step and a an inclined surface shaft and ham.

art of the hammer rests fora shaft, a hammer carried thereby, means for rotating said shaft and hammer, a stop lever for said shaft, electro-magnetically operated means for releasing said lever, a spring carried ,by said shaft'and curved around one side thereof for coming gradually into action against said sto lever as the shaft rotates so as to press said lever away from said shaft.

10. A gong-strikingmechanism com rising, a main shaft, means for giving said s aft complete rotation, a hammer having a limited rotative movement relative to 1 a spring connection between said shaft and hammer, means for stopping said shaft after a complete rotation and means for disengaging said stopping means.

g HENRY E. REEVE.

'Witnesses f Rom. S. 'ALLYN, ELIsHA W. MoGUIRE.

said shaft, 

